Norway is not an EU member but is part of the Schengen area; visa-exempt travellers can enter for business visits within Schengen rules. Visitors who need a Schengen visa must apply for a visitor visa for Norway and carry the business-visit documentation listed by Norwegian authorities (invitation, employer letter, travel and accommodation proof).
Confirm your nationality's status on the UDI pages before booking. Norwegian authorities publish a dedicated list of requirements for business visits and a business visa document checklist; carry the invitation from the fair and employer confirmation of purpose.
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